Check Engine code # help!!!!
 

Hey guys i have a '97 ram 2500 4x4 w/the 360. Been having problems with some surging idle. Doesnt do it all the time. I have a check engine light on and the code is #27. My book says: One of the injector control circuit output drivers does not respond properly to the control signal. Check the circuits. Is there anything i can look for or check? Has anyone seen this code before? Any help would be great.

Thanks, Matt